{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-98228", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98228", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-10-06T08:45:03.154Z", "updatedAt": "2026-10-19T09:15:59.955Z", "importedAt": "2026-10-24T01:58:41.756Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ\n\nOn I6500 CPU cores, lld and scd give no ordering guarantees (same as all\nother instructions). To respect the assumption that arch_cmpxchg() is\nfully ordered, we must inject sync instructions above and below our\nlld/scd loops using the already in place WEAK_REORDERING_BEYOND_LLSC\ninfrastructure.\n\nOtherwise, bad things can happen:\n\n[ 34.054496] CPU 3 Unable to handle kernel paging request at virtual address 0000000000000000, epc == a80000080838e01c, ra == a80000080838dfc4\n[ 34.054559] Oops[#1]:\n[ 34.069561] CPU: 3 UID: 0 PID: 170 Comm: pipe_race Not tainted 7.2.0-rc6-01553-gb73c35220968-dirty #103 VOLUNTARY\n[ 34.079932] Hardware name: Mobile EyeQ5 MP5 Evaluation board\n[ 34.085592] $ 0 : 0000000000000000 0000000000000001 0000000000000000 0000000000000000\n[ 34.093616] $ 4 : a800000808ee2618 000000000b7a879d 0000000000001000 0000000000000000\n[ 34.101638] $ 8 : 0000000000e3f2c9 0000000000000000 a800000808a2a9f8 0000000000000000\n[ 34.109660] $12 : a8000008139ffcd8 ffffffff84080018 a80000080837fae0 7878787878787878\n[ 34.117682] $16 : a800000807e82940 0000000000001000 0000000000000000 0000000000000000\n[ 34.125704] $20 : a800000802920e00 a8000008139ffdf8 a800000802649400 0000000000e3f2c9\n[ 34.133726] $24 : 0000000000000006 00000001200406e0\n[ 34.141783] $28 : a8000008139fc000 a8000008139ffd10 0000000000e3f2c8 a80000080838dfc4\n[ 34.149837] epc : a80000080838e01c anon_pipe_read+0xd4/0x428\n[ 34.155697] ra : a80000080838dfc4 anon_pipe_read+0x7c/0x428\n[ 34.161549] Status: 140000e3 KX SX UX KERNEL EXL IE\n[ 34.166551] Cause : 40800408 (ExcCode 02)\n[ 34.170574] BadVA : 0000000000000000\n[ 34.174161] PrId : 0001b028 (MIPS I6500)\n[ 34.178183] Process pipe_race (pid: 170, threadinfo=000000005ca35720, task=00000000e1013890, tls=000000014ebbb780)\n[ 34.188568] Stack : a800000802649400 0000000000000000 0000000000000000 a8000008139ffdd0\n[ 34.196623]\t 0000000000000fba a800000808ee0000 0000000000000001 a8000008130c3e80\n[ 34.204676]\t a8000008080d1280 a8000008139ffd58 a8000008139ffd58 1dbd2b22ea1dd500\n[ 34.212729]\t a800000802649400 a800000808ee0000 ffffffffffffffea 0000000000000001\n[ 34.220783]\t 0000000000001000 0000000000000000 00000001200ae518 ffffffffffffffff\n[ 34.228836]\t 000000fffbe0e530 a80000080837edf4 000000fffbe0e530 0000000000000000\n[ 34.236890]\t 0000000000000000 0000000000000000 000000014ebb55a0 0000000000001000\n[ 34.244943]\t 0000000000000001 a800000802649400 0000000000000000 0000000000000000\n[ 34.252996]\t 0000000000000000 0000400400000000 0000000000000000 1dbd2b22ea1dd500\n[ 34.261049]\t 00000000140000e3 a800000802649400 a800000802649400 a800000808ee0000\n[ 34.269103]\t ...\n[ 34.271568] Call Trace:\n[ 34.274026] [] anon_pipe_read+0xd4/0x428\n[ 34.279533] [] vfs_read+0x25c/0x318\n[ 34.284607] [] ksys_read+0x104/0x138\n[ 34.289763] [] syscall_common+0x44/0x68\n[ 34.295187]\n[ 34.296689] Code: f84000cf 02209825 de020010 d8400004 02002825 0040f809 02802025 f84000c3\n[ 34.306504]\n[ 34.308099] ---[ end trace 0000000000000000 ]---\n\nMy initial reproducer was the xdp-tools test suite. A standalone\nreproducer would be an lld/scd loop that, when the read is reordered by\nthe CPU, triggers a fault. We can achieve this from userspace by\nstressing an anonymous pipe, which uses a mutex. Program used:\n\n\t// SPDX-License-Identifier: GPL-2.0\n\t// pipe_race.c - reproducer for MIPS LL/SC reordering vs fs/pipe.c\n\t//\n\t// Two userspace processes on an anonymous pipe:\n\t// parent = writer: tight write() loop\n\t// child = reader: tight read() loop\n\n\t#define _GNU_SOURCE\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "fbe0fae601b780622fcb7034a479fa161645b9f4", "status": "affected", "versionType": "git", "lessThan": "3f017c2ca8c31a1e135dd87be647096866d6b196" }, { "version": "fbe0fae601b780622fcb7034a479fa161645b9f4", "status": "affected", "versionType": "git", "lessThan": "bbc448c541ed90d52f9ec22f17394304e3bf170e" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.11", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.11" }, { "version": "7.2.8", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.2.*" }, { "version": "7.3", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }